elastic collisions, please help.

juanpablod

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Aug 30, 2005
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This question seems to be to specific for me to apply similar examples to.
A neutron (mass =m) has an elastic collision with a stationary deutron (mass = 2m) such that the neutron's direction of motion is changed by 90 degrees.

(a) Show that two-thirds of the neutron's energy is transferred to the deutron.

(b) What is the angle between the neutron and deutron paths after their collisions?

I understand part a is to do with the conservation of energy/momentum but can't quite show it clearly enough. For part b, i just cant find any examples similar enough to help.
:?:
 
** Posted Elsewhere **

Please don't post the same problem twice. Very irritating.
 
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